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Finding the Fourth Proportional to 612,829.44, 845,359.32 and 367,750.80

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Solution

The fourth proportional to 612,829.44, 845,359.32 and 367,750.80 is: 507,288.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,829.44 : 845,359.32 = 367,750.80 : x
  2. Step 2: Convert to fraction form
    612,829.44/845,359.32 = 367,750.80/x
  3. Step 3: Cross multiply
    612,829.44x = 845,359.32 × 367,750.80
  4. Step 4: Simplify right side
    612,829.44x = 310,881,566,217.46
  5. Step 5: Solve for x
    x = 310,881,566,217.46/612,829.44
  6. Step 6: Final answer
    x = 507,288.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.